The 42 Dra system contains 1 exoplanet. It is located 295.68 light years away from the solar system.
| Mass | 0.98 solar masses |
| Radius | 22.03 solar radiae |
| Temperature | 4200 kelvin |
| Stellar Metallicity | -0.46 decimal exponent |
| Age | 9.49 billion years |
At more than 50 Earth masses, 42 Dra b is a gas giant, a planet whose mass is mostly made up of hydrogen and helium, like Jupiter and Saturn.
| Mass | 1233.130 Earth masses |
| Density | 3.080 grams per cubic centimeter |
| Radius | 13.000 Earth radiae |
| Semi-major Axis | 1.19 AU |
| Eccentricity | 0.38 |
| Orbital Period | 479.100 days |
| Discovery Method | Radial Velocity |
| Discovery Facility | Thueringer Landessternwarte Tautenburg |
| Discovery Telescope | 2.0 m Alfred Jensch Telescope |
| Discovery Instrument | Coude Echelle Spectrograph |
| Discovery Date | 2009-06 |
| Reference | Doellinger et al. 2009 |